help finding the right ballscrew n store

[15mgtar]

Anyone knows where I can shop in China the cheapest ballscrew unit? Which kind do you guys use and what is the diameter of the lead screw?
Yesterday I ask for outer circular ballscrew with 40mm diameter leadscrew 1.7meter long costing $368 each that is out of my budget for a single ballscrew unit.
I use 40mm open type bearing and my table working area would be 1.5 meter x 1 meter.
Thanks in advance.

[SCzEngrgGroup]

Chinese ball nuts & screw on Ebay

[15mgtar]

Thanks HimyKabibble! but I don't know what diameter of ballscrew should I use? 25mm diameter or 16mm good enough? someone help pls.

[SCzEngrgGroup]

Thanks HimyKabibble! but I don't know what diameter of ballscrew should I use? 25mm diameter or 16mm good enough? someone help pls.

That depends on the size/weight of the machine. Is your machine a 30# Taig, or a 10K# VMC? For small benchtop machines (X2/X3), 5/8" is fine. For larger ones (RF-45), 3/4" is better. On a Bridgeport size machine, 1" or 1-1/4" for X/Y, 5/8" for the quill.

Regards,
Ray L.

[15mgtar]

I plan to use the ballscrew for table size for cnc router 1.5 meter x 1 meter and it will be very heavy table. So which size is the most suitable for that application?